Scuba diving in Yucatan Cenotes can be recommended. Cenotes are natural sinkholes found throughout Mexico that form when the roof of an underground cavern collapses. This was an awesome dive! It was cold water!
Teotihuacan ('the place where the gods were created'), 50 km north-east of Mexico City. Built between the and centuries A., it is characterized by the vast size of its monuments – the Temple of Quetzalcoatl and the Pyramids of the Sun and the Moon.